Gasket



Se t22, 1931, STOCK 1;823,920

GASKET Filed Feb. 6, 1

Patented Sept. 22, 1931 V ANTHONY '1. STOCK, E DAY'EON, 03110, JLSSIGKOR, ,B'Y WEESIEE ASSIGNMENTS, T0 FRIGIDAIBE CQEPGR-RTIGN; A COEPG'RATIGIQ' DEJAAARVARE V easknr Application filed February faces between which itis placed and still maintain a leak-proof joint.

Another object is to so shape the'gasket that any portion thereof may readil be displaced by the crushing effect of two imperfectly surfaced members being clamped together, whereby a substantially perfect seal is provided between said members.

A still further ob ect is to provide gasket which will prevent distortions of either of the members between which it is clamped.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accom an in drawin 's wherein a re ferred form of embodiment 01 the present invention is clearly shown.

In the drawings: F 1 is a sectional view of a compressor on which the gasket is used.

Fig. 2 is a fragmentary view showing one portion of a double cylinder gasket.

Fig. 8 is a fragmentary view of a gasket adapted to be used between the cylinder and crank case of the compressor shown in 1.

Fig. 4 is a section thru a compressor cylinder and gasket adjacent one of the clamping bolts.

Referring to the drawings, the numeral 20 designates a compressor adapted to be used in a refrigeration system wherein sulphur clioxide is used as a refrigerant. The compressor has a crank case provided with the crank shaft 21 which is adapted to operate the compressor pistons 23 and 24.- by means of crank throws 25 and 26 respectively.

Pistons 23 and 24:. move in cylinders 27 and 28 respectively, formed in the cylinder block.

29. This block is provided with a flange 30 which fits upon a correspondingly shaped as flange 31 formed on the crank case. A gasket and toe" called a spa po tion.

when

6, 132a Serial 110. 88,597.

is interposed between the cylinder block and crank case these members being securely ler by means of bolts 33. A. valve block: 1s provlded with suitable check valve mechanism. This valve block is secured to a Flange formed on the end of the cylinderblock, havmg the gasket 35 inter posed between said valve and cylinder blocks. A cyl' head 36 and gasket o? are secured to the v block 35.

in the 3 thereis shown a fragmentary fiat view of the ga ket 32 to be POSltIOIlGd.

between the rank case and cyiind The portion f t gasket may be designated as the sealing p. rtion while ll may be Both these portions are tied together by oairs of webs 49, which enclose apertures 41.3 for re eivin the clamping bolts 33. The web'po-rtions form apertures or perforations between adjacent pairs of webs. By refer ng to the Fig. 3 it may be seen that the width of the material in either the sealing, spacer or web portions is substantially equal, and of course the thickness of all portions of the gasket is uniforir The cross-sectional area of all of these portions is substantially the same. Thus said gasket clamped between two adacentmembers the flow of the metal under the influence of pressure caused by the clamping means will tend to be uniform over the entire gasket. 'liegasket substantially like the gasket tl" the former however being double adapted to fit between the valve and cylinder blocks. 1 It, hasbecn found from actual practice thatwhere gai cts constructed in accordance with the present invention are used, for example between cast iron partsof compressors above described, the warping of the compressor parts heretofore experienced has been eliminated to a very large extent. Various fibrous materials have been used as well asmetallic substances in making up gaskets of this kind and tl e metallic gaskets have proven superior in withstanding the deteriorating efi ect of sulphur dioxide.

7 ic gasket may be made up of lead solder of composition var dng from 10% tin and 90% lead to 90% L111 and 10% lead. The

most desirable composite gasket contains approximately 50% tin and 50% lead;

Such material provides a gasket wholly of a relatively soft, plastic, composite metal which, when clamped between surfaces havingimperfections, will conform to such imperfections and provide a substantially leakproof oint. l/Vhere high spots are present in said surfaces the pressure exerted by the clamping together of such surfaces will displace the metal in the gasket, such displacement being possible due to the apertures 44 surrounded by material having approximately equal cross-sectional areas. V

This type of gasket may be made by stamping and perforating the gasket from a sheet of material of proper thickness. This is done with dies and it is desirable to have the dieshapes as simple as possible. It may be that in some cases the die shape is unduly complicated if the gasket is made so that the portions between the adjacent perforations and the portions between the perforations and the edges are of absolutely. uniform crosssectional area. In such cases I find that the uniformity may be slightly departed from ithout departing from the spirit of the invention and I prefer to do this where it results in simplicity of die structure.

While the form of embodiment of the present invention as herein disclosed, constitutes a preferred form, it is to be understood that other forms might be adopted, all coming within the scope of the "claims which follow.

What is claimed is as follows: 1. A gasket made wholly of a plastic metal and having a central opening and a plurality of perforations arranged in spaced relation about said opening so as to provide portions of approximately equal cross-sectional area between adjacent perforations and between the perforations and edges of the gasket.

2. A. gasket having an opening and made wholly of plastic metal comprising in combination, a sealing portion surrounding the opening; a spacer portion also surrounding the opening and being of substantially the same width and thickness as the sealing portion; and web portions connecting the sealing and spacer portions, said web portions having substantially the same cross-sectional area as the combined cross-sectional areas of the sealing and spacer portions.

In testimony whereof I hereto affix my signature.

' ANTHONY T. STOCK. 

